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Posted to java-user@axis.apache.org by subhendukumar mohanty <su...@infosys.com> on 2003/05/07 15:04:00 UTC
RE: help required for attachment using ejb as webservice
Thanks Toshi,
I got your mail regarding the sample example. My return type bean is serializable. but it's data member is not serializable. I can try this but it will not solve my requirement as we have to return more image with there meta data . So it has to be wrapped by custom object.
Let me know if you have more idea.
Thanks,
Subhendu
-----Original Message-----
From: Toshiyuki Kimura [mailto:kimuratsy@nttdata.co.jp]
Sent: Tuesday, April 08, 2003 12:10 AM
To: axis-user@ws.apache.org
Subject: RE: help required for attachment using ejb as webservice
Hi Subhendu,
Please show us the snippet of the ejb code and the stacktrace
of the exception. And I have no trouble with my environment;
axis 1.1 rc2 on WebLogic 7.0 SP1. If it's possible to you,
could you check the behavior of your ejb on the same env. ?
Best Regards,
Toshi (Toshiyuki Kimura) <ki...@nttdata.co.jp>
R&D Headquarters
NTT DATA Corporation
-----Original Message-----
From: subhendukumar mohanty [mailto:subhendukm@infosys.com]
Sent: Saturday, April 05, 2003 2:24 AM
To: axis-user@ws.apache.org; Toshiyuki Kimura
Subject: RE: help required for attachment using ejb as webservice
Yes if i am not making this as ejb then it is ok. The only problem
is with ejb
-----Original Message-----
From: Toshiyuki Kimura [mailto:kimuratsy@nttdata.co.jp]
Sent: Friday, April 04, 2003 12:08 PM
To: axis-user@ws.apache.org
Subject: Re: help required for attachment using ejb as webservice
Hi Subhendu,
Could you make sure that you have the right setting
of the serializer for a DataHandler on wsdd ? And one
more question, are you successful with a non-ejb impl ?
Best Regards,
Toshi (Toshiyuki Kimura) <ki...@nttdata.co.jp>
R&D Headquarters
NTT DATA Corporation
----- Original Message -----
From: "subhendukumar mohanty" <su...@infosys.com>
To: <ax...@ws.apache.org>
Sent: Friday, April 04, 2003 10:36 PM
Subject: RE: help required for attachment using ejb as webservice
>
> Thanks for your suggestion
>
> Actually i had tried making a DataHandler as return type of EJB method.
> For the time being think that there is no webservice. I wrote the sample
> ejb and run that sample and it gave me nonserializable exception.That's
> why i could not use this. For ejb all the return type has to extend
> Java.io.serializable.
>
> Let me know if i am not correct
>
> -----Original Message-----
> From: Toshiyuki Kimura [mailto:kimuratsy@nttdata.co.jp]
> Sent: Thursday, April 03, 2003 10:43 PM
> To: axis-user@ws.apache.org
> Subject: RE: help required for attachment using ejb as webservice
>
> Hi Subhendu,
>
> You're incorrect. You can't make it the return type in
> ejb method. Why not ? I can do that. I don't know why
> you didn't try anyway ?
>
> I believe, you're confusing the meaning of the word;
> 'serialize' in the Web Services area with 'serializable'
> in the general Java programming.
> The diff. of serialize/deserialize in the 2 areas are;
>
> WS area : [Program lang. specific objects] <-> [XML(SOAP)]
> Java gen: [Java objects] <-> [byte array]
>
> These are quite different, despite the misleading word.
> Can you make sense of the meaning ?
>
> Best Regards,
>
> Toshi (Toshiyuki Kimura) <ki...@nttdata.co.jp>
> R&D Headquarters
> NTT DATA Corporation
>
> -----Original Message-----
> From: subhendukumar mohanty [mailto:subhendukm@infosys.com]
> Sent: Friday, April 04, 2003 2:06 AM
> To: axis-user@ws.apache.org
> Subject: RE: help required for attachment using ejb as webservice
>
> I have session bean. One thing i am not clear. If datahandler
> is not a serializable , i can not make it the return type in
> ejb method. Am i correct or not in the above statement ?
>
> -----Original Message-----
> From: Toshiyuki Kimura [mailto:kimuratsy@nttdata.co.jp]
> Sent: Thursday, April 03, 2003 7:20 AM
> To: axis-user@ws.apache.org
> Subject: RE: help required for attachment using ejb as webservice
>
> Hi Subhendu,
>
> At the beginning, I'd like to notify that I've already succeeded
> in EJB usage with the AXIS 1.1 rc1 and the posted code. Thus, it
> seems the root problem is not the return type of an ejb method.
>
> The most interesting describes from you are the followings;
>
> | Type of Image (Jpeg). We get the image as byte array from
> | other source. We do not get file reference.
>
> I guess that you're saving the jpeg images on DBMS, and also
> the ejb is implemented as an Entity Bean. Is that right ?
> If so, the restriction of 'serializable' is for an Entity Bean
> rather than for an ejb on AXIS.
>
> Best Regards,
>
> Toshi (Toshiyuki Kimura) <ki...@nttdata.co.jp>
> R&D Headquarters
> NTT DATA Corporation
>
> -----Original Message-----
> From: subhendukumar mohanty [mailto:subhendukm@infosys.com]
> Sent: Thursday, April 03, 2003 12:07 AM
> To: axis-user@ws.apache.org
> Subject: RE: help required for attachment using ejb as webservice
> provider
>
> Hi Toshiyuki
>
> My Answers are as below
>
> Axis 1.0 (But we may go for Apache Soap latest version comes
> with websphere 4.0)
> Type of Image (Jpeg). We get the image as byte array from other
> source. We do not get file reference.
>
> Problem. If i expose my ejb method as webservice interface and
> i have to use soap with attachment then the return type of EJB
> method will be of Datahandler Type. But DataHandler can not be
> return type of an ejb method as it does not implement
> java.io.serializable and all ejb retutn parameters needs to be
> serializable.
>
> So to avoid this i was thinking that let my ejb return byte array
> and i have to write a wrapper java class which will convert the
> byte array to datahandler (still no clear how to convert that).
> The wrapper java class will be exposed as web service rather than
> exposing the ejb as webservice.
>
> Let me know whethere i am procceding in a correct direction.
>
> Thanks,
> Subhendu
>
> -----Original Message-----
> From: Toshiyuki Kimura [mailto:kimuratsy@nttdata.co.jp]
> Sent: Tuesday, March 25, 2003 6:27 AM
> To: axis-user@ws.apache.org
> Subject: Re: help required for attachment using ejb as webservice
> provider
>
> Hi Subhendu,
>
> In order to clear questions from you, we'll need more details of
> your situation;
>
> - Version of AXIS: 1.0, 1.1Beta, RC1, RC2, or the current ver ?
> - Type of Image : 'JPEG', 'GIF', or the other specific types ?
> - Real problem : 'Exceptions', or 'Functionally defectives' ?
>
> If you're using AXIS 1.1 Beta (or the later) and 'image/jpeg
> or image/gif' as the content type (i.e. your image archive only
> has JPEG files and/or GIF files), you might make it with the
> following snapshot;
>
> public DataHandler downladFile(java.lang.String filename){
> try{
> FileDataSource dataSource = new FileDataSource(filename);
> DataHandler dataHandler = new DataHandler(dataSource);
> return dataHandler;
> }catch(Exception e){
> :
> }
> }
>
> Please note DataHandler hasn't been implemented as serializable,
> however, some standardized types of content (MIME type) will be
> automatically serialized and deserialized by the runtime, AXIS
> with your right configuration.
>
> Best Regards,
>
> Toshi (Toshiyuki Kimura) <ki...@nttdata.co.jp>
> R&D Headquarters
> NTT DATA Corporation
>
> -----Original Message-----
> From: subhendukumar mohanty [mailto:subhendukm@infosys.com]
> Sent: Friday, March 21, 2003 10:05 AM
> To: axis-user@ws.apache.org
> Subject: help required for attachment using ejb as
> webservice provider
>
> We are creating a ejb which will be exposed as webservice.
> One of the method of ejb will return the image from image
> archive. So we need to use soap with attachment for this.
> I learned that if any data is returned using DataHandler
> it will be automatically passed as soap with attachment.
> As DataHandler is not implemented java.io.serializable,
> I can not use this as the return type of the ejb. I am new
> to webservice and axis. So any body can guide me what to do
> in this case..
>
> Your help will be appreciated.
>
> Thanks,
> Subhendu
>